Weft-tension means for looms.



PATENTED AUG. 2, 1904.

B. F. MOGUINBSS.

WBFT TENSION MEANS FOR LOOMS.

APPLICATION FILED DEC. 21. 1903.

2 SHEETSSHEET 1- H0 MODEL.

PATENTED AUG. 2, 1904.

B. F. MGGUINESS.

WEFT TENSION MEANS FOR LOOMS.

APPLICATION FILED DEC. 21. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

BENJAMIN F. MGGUINESS, OF IVOROESTER, MASSACHUSETTS, ASSIGNOR TOOROMPTON & KNOWVLES LOOM WORKS, OF IVOROESTER, MASSA- CHUSETTS, ACORPORATION OF MASSACHUSETTS.

WEFT-TENSION MEANS FOR LOOIVIS- SPECIFICATION forming part of LettersPatent No. 766,511, dated August 2, 1904.

Application filed December 21,1903. Serial No. 185,948.

To all whom it may concern:

Be it known that I, BENJAMIN F. MCGUIN- ESS, a citizen of the UnitedStates, residing at WVorcester, in the county of \Vorcester and State ofMassachusetts, have invented certain new and useful Improvements in\Veft-Tension Means for Looms, of which the following is aspecification.

My invention relates to weft-tension means for looms and to that classof looms for weaving heavy belting, matting, &c., in which very strongand thick filling, sometimes with a wire center, is used. In this classof fabrics it is desirable to have a good and uniform selvage, and tomake this the filling has to be drawn very tight after the shuttle haspassed through the shed.

The object of my invention is to provide a supplemental attachment ormechanism located at each end of the lay between the shuttle-boxes andthe reed and automatically operated after the shuttle has passed throughthe shed to grip and hold the filling and draw it tight on the forwardmovement of the lay and release it on the backward movement of the lay.

My invention consists in certain novel features of construction of myimprovements, as will be hereinafter fully described.

I have only shown in the drawings a detached portion of one end of a layand my improvements applied thereto sufficient to illustrate theconstruction and operation thereof.

Referring to the drawings, Figure 1 shows a detached sectional view of alay in its forward position with my improvements applied thereto. Fig. 2corresponds to Fig. 1, but shows the lay in its rear position and myfilling-gripping mechanism in its opposite position; and Fig. 3 is aplan view of some of the parts shown in Fig. 1 and shows also the reedand a portion of the woven fabric.

In the accompanying drawings, 1 is the laysword, which is pivotallysupported at its lower end, (not shown) and has a rocking motion in theordinary way.

end of said link is pivotally connected to an (N0 model.)

2 is the lay.

3 is the hand-rail, supported on uprights 4, secured to the back of thelay, as is customary.

I will now describe my improvements.

A stand 5 is secured to the back of the lay, and at the upper end ofsaid stand 5 is pivotally mounted at 5 the rear end of the gripping jawor lever 6. Said lever 6 has in this instance a central longitudinalopening 6' therethrough, (see Fig. 3,) and the front end of said lever 6is in this instance pivotally connected to one end of a link 7. Theother arm or extension 8 on the filling-finger 8, which is pivotallymounted on a pin 9, supported on a plate 10, secured upon the top andthe front surface of the lay and extends into a recess (shown by brokenlines) in the upper surface of the lay and is adapted to be raised andlowered through a central opening in the plate 10. The plate 10hasaprojection 10 thereon which extends out from the front of the lay.

The filling-finger 8 extends under the filling when the lay is in itsrear position, as shown in Fig. 2, and when the shuttle is thrownthrough the shed. As the lay moves forward the finger S rocks on itspivotal support and moves up to engage and move the filling 11 forwardonto the projection 10 on the plate 10, as shown in Fig. 1, intoposition to be engaged and gripped by the flat grippingsurfaces 6 on thelever 6. (See Fig. 1.)

I will now describe the mechanism for actuating the gripping-lever 6 andthe fillingfinger 8 on the forward and backward movement of the lay. Avertically-moving rod 12 is loosely supported at its upper part in aswivel or rocking bearing in the lower end of the stand 5 and has itsupper end 12 extending directly beneath and in engagement with arear\vardly-extending projection 6 on the gripping-lever 6.

secured in place by a set-screw 15'.

The lower end of the rod 9 spring 16 encircles the rod 12 and bears atone end against the swivel-bearing 13 and at its other end against acollar 17, secured on the rod 12 by a set-screw 17. The spring 16 actsto 'hold the upper end 12 of the rod 12 in engagement with the lowersurface of the projection 6 on the lever 6 and causes said lever toengage the filling 11 with a springactuated or yielding motion. On theforward movement of the lay the spring 16 is compressed and the rod 12is moved downwardly, as shown in Fig. 1, and on the backward movement ofthe lay the spring 16 expands and causes the rod 12 to-mo've upwardly,as shown in Fig. 2. On the forward movement of the lay the lower end ofthe rod 12 is held bythe swivelbearing 13; but the upper end of said rodmoves with the lay and by reason of its swivel-support on the stand 5moves on the projection '6' on the lever 6 toward the pivotal support ofsaid lever and causes'said lever to rock and move down and bring theengagingsurfaces 6" thereon onto the filling-thread "11 on theprojection 10 on the plate 10, asshown in Fig. 1, to grip the fillingbetween the-surfaces 6" and the projection 10. The movement of the lever6 through link 7 moves the arm '8 on the filling-finger 8 and causessaid finger 8 to move up out of the recess in the lay and engage andmove forward the filling '11 onto the projection 10 on the plate 10, asshown in Fig. 1, in position'to be gripped by the grippingsurfaces 6' onthe lever '6. The continued forward movement of the lay draws tight thefilling 11, which is held by the lever 6, as shown in Fig. 3. On thebackward movement'of the lay the rod 12 at its upper end is carried back'withthe'lay and also moved in its swivel-support to cause its upper endto move out on the rearwardly-extending projection 6' on the lever 6 tothe end thereof, as shown in Fig. '2. At the 'same time a spiralspring-18, attached at one endin this instance by a screw 19to the stand5 andat its other end by a screw20 to the projection 6' onthe lever 6,acts tomove said lever 6 on its pivotal support and raise the outer endthereof and through link 7 and arm 8"move the finger 8 and lower saidfinger into the recess in the lay, as shown in Fig. 2, preparatory toanother forward movement of the lay and the repetition of the-operationof my gripping'mechanism'to grip and draw tight the ation, requiring noadditional work from the operator.

It will be understood that the details of construction of myimprovements may be varied, if desired.

down motion at its front end, a link or connector from said lever to arocking finger adapted to engage the filling, and said finger, of meansfor operating said lever and finger to lower the lever on the forwardmovement of the lay, and raise it on the backwardmovement of the lay,said means consisting of a vertically-movingrOd,supported on and movingwith the lay at its upper end, and loosely held in a'swive'l-bearingatits lower end, and adapted to engage saidlever at its upper end, aspring to actuate said rod,and'a spring connected-to said lever,substantially as shown and described.

2. A weft-tension mechanism for looms, consisting of a lever :pivotallysupported at the rear of the lay, a filling-fingerto engage and moveforward the filling on the forward movement of the lay, into position'tobe engaged by said lever,connectionsbetween said lever and finger,and meansfor operating said lever to cause it to move down to engage thefilling, on the forward movement of the lay, and to move upand disengagethe'filling on the backward rnovementof the lay, substantially asshownand described.

3. weft-tension mechanism for looms, consisting of 'a'lever pivotallysupported at the rear of the lay, afilling-"finger to engage and move-forward -the-filling on the forward movement of the lay, intoposition'to be engaged by said. lever, connections between said leverand finger,'and means'for operating said lever-to cause it to move 'downto'en'gage the filling, on the forward movement of the lay, and move upto disengage the'filling on the backward movement'of thelay, said meansconsisting of a vertically -moving rod suppor'tcdat its upper'end onandmoving with the lay, and adapted to engage a projection on said leverand'move'forward with thelay, and loosely'mounted in a swivel-support atits lower end,'and a spring to actuate said rod, and a spring connectedto said lever, substantially as shown and described.

BENJ. *F. MGGUINESS.

Witnesses:

1C. IDEWEY, M. HAAs.

